Statement:
In Australia, the tax system is simpler than in Japan

In the Tax Competitiveness Index rating Australia holds position #9 ²⁰²¹ out of 37 and Japan is #24 out of 37 ²⁰²¹.
Position of Australia is better than position of Japan.

Referencies:

1. Tax Competitiveness Index ²⁰²¹ by Tax Foundation

   The countries in the rating sorted by 'Overall Score' in descending order.

   Australia	'Overall Score' value is	71.3
   Japan	'Overall Score' value is	61.5